Electric belt.



V. SENCE.

ELECTRIC BELT.

APPLICATlON FILED JUNE 25. 1912.

1,21 1,492, Patented Jan. 9, 1917.

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V. SENCE.

ELECTRIC BELT.

APPLICATION min JUNE 25, 191z.

1,21 1,492. v Patented Jan. 9,1917.

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V- SENCE.

ELECTRIC BELT.

APPLICATION FILED um: 25, \912.

1,21 1,492, Patented Jan. 9, 1917.

3 $HEETS-SHEET 3- an 7. 11- 1- a VICTOR SEN CE, OF NEW YORK, N. Y.

ELECTRIC BELT.

Application filed June 25, 1912.

To all whom it may concern Be it known that I, VICTOR SEN on, a cltizenof the United States of America, residing at New York city, borough ofManhattan, county and State of New York, have invented certain new anduseful Improvements in Electric Belts, of which the fol-- lowing is aspecification.

My invention relates to belts designed to be worn on the body of apatient, generating an electric current and transmitting the samethrough the patients body, and to a mechanical current generator for usethereon. The belts heretofore produced for this purpose have employedprimary or storage batteries for generating such current. These arecumbersome and uncertain in action and the current generated by them isweak. I have invented a therapeutic device comprising a belt providedwith a small portable spring driven electric generator which can beconveniently carried thereon and which, when wound up, will run for tenor fifteen minutes and generate a current of considerable tension andquantity.

The best form of apparatus embodyin my invention, and one modificationthereot, are illustrated in the accompanying three sheets of drawings inwhich,

Figure 1 is a perspective view of the belt. Fig. 2 is a diagram of theelectric circuits. Fig. 3 is an enlarged diagram of the circuitreversing switch. Fig. 4 is an enlarged cross section on line 66 ofFig. 1. Fig. 5 is a similar cross section in line 55 of Fig. 1. Fig. 6is an enlarged, detail cross section on line 44 of Fig. 1. Fig. 7 is aplan View of the generator with part of the top plate broken away. Fig.8 is a side view of the same, and Fig. 9 is a diagram of a modifiedgenerator driving gear.

Throughout the drawings like reference characters indicate like parts.

The belt consists of a non-elastic section 1, and a shorter elasticsection 2, with any convenient form of connecting clasp 3. A silk outercovering 4 is slit longitudinally and the two portions connected bylacings 5 and 6, or convenient means. Near one endof the non-elasticsection 1 under silk cover 4 is a switch box 22, and near the other endis a. generator box 23.

-The electrical contacts and connections are as follows: 7, 7, are twometal disks forming contacts designed to press on the patients back. 8is a similar disk, prefer- Specification of Letters Patent.

Patented Jan. 9, 1917. Serial No. 705,821.

ably carried by the elastic section 2, designed to press on the patientsabdomen. As shown, disks 7, 7, are carried on spring strip 9, coveredwith conducting covering 10. A convenient JlGtllOtl of mounting thedisks is by having threaded hubs screw into nuts 11, fas tened on strip9. This strip is held to the belt by 12, and having strip 9, and beltsection 1 clamped together between them. 16 is a wire or other conductorrunning from plate 15 to one of the contacts 27, on switch lever 25 (seeFig. 3) which is material. Disk 8 is preferably supported on a bentstrip of spring metal 17 which is clamped to bar 18, by thumb nuts 19,19, so as to clasp the elastic belt section 2 between them. This rendersthe disk 8 adjustable on belt section 2. A wire 20 extends to the othercontact 27 on switch lever 25, and is supported midway of its length at21. The switch contact plate 29 is connected by wire 41 to one pole ofthe generator 40, and contact plate 30 is connected by wire 42 to theother pole. These wires 41 and 42 are shown in diagram (Fig. 2) runningalong the belt around the body of the patient under the belt coveringand so do not show in Fig. 1. The switch lever 25 may be manipulated byany convenient form of handle on the outside of the casing as indicatedat 26 in Fig. 2.

The current generator is preferably of the type described in myapplication Serial N 0. 697,136, filed May 14, 1912, now Patent No.1,052,522 though other forms of magneto-generator might be used. Asshown in Figs. 7 and 8 the generator 40 is driven b pinion 39 on itsarmature shaft whic meshes with gear 38 on shaft 37, which also carriespinion 36 driven by gear 34 on arbor 33 to which the coiled spring 32 isattached. Arbor 33 and gear 34 are connected by pawl 31 and ratchet 35.

Preferably the belt section 1 is cut away as indicated at 28 (Fig. 5) toreceive the generator and switch casings, and the inner belt lining 24retains the casings in place.

In operation the switch is turned into a position such as is shown indotted lines Fig. 3, so that its contacts 27 27, bear on plates 29 and30, and the spring arbor 33 is turned, by a key grasping its squaredend, in a direction to wind up the spring 32 and cause ratchet teeth 35to slip under pawl 31, the

belt being in position on the patients body.

kid or other nonbars 13 and 15 held together by bolt of non-conductingI? Access to the arbor 33 is had by partly unlacing the cover 4 over thegenerator casing. As the spring unwinds it rotates the generator 40 andcurrent passes from one pole through wire 41, contact plate 29', onecontact 27 and wire 20 to disk 8, through the patients body to the othercontact disks, 7,7, and back by wire 16, one of the contacts 27, contactplate 30, wire 42 to the other pole of the generator. The spring motorwill run for about 15 minutes and the current can be reversed from timeto time in its direction of flow through the patients body by revers ingthe switch lever. When the switch is in the position shown in full linesin Fig. 3, the circuits are open.

A. greater effect is produced by the current if it varies from time totime in force as well as in direction and to produce that variation Imay use a variable speed driving gear, such as is indicated in outlinein Fig. 9, where the spring driven gear 3% meshes with pinion 36 onshaft 37, as before, but shaft 37 carries an elliptical gear 4&8which'meshes with a second elliptical gear 4L9 on shaft 50, on which isfastened gear 38 meshing with pinion 39 on generator 40. Theinterposition of eliptical gears 48 and 49 and shaft 50, between shaft37 and gear 38 changes the uniform rotation of shaft 37 to a variablespeed rotation in shaft 50 which is transmitted by gear 38 to thegenerator.

Having, therefore, described my invention, I claim:

1. A therapeutic device comprising a belt adapted to be worn about thehuman body having attached thereto a rotary generator of electricity, aspring motor geared to said generator, contact plates adapted to presson the body of the wearer, and connections from said plates to the polesof the generator, together with a train of variable speed gearinginserted between the motor and the generator, said gearing comprising apair of intermeshing elliptical gear wheels.

2. An electric therapeutic device comprising a rotary generator ofelectricity, body contacts in the generator circuit, a motor, andgearing connecting the motor and the generator adapted to rotate thegenerator at varying speeds during a given period of uniform rotation ofthe motor.

VICTOR SENCE.

Witnesses:

' A. PARKER-SMITH,

M. Gr. CRAWFORD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

